A GM can have a succeeding version as well. Apple simply has retired the GM terminology in favor of RC because the latter isn’t racially loaded.
This change was made a couple of years ago and announced in the developer beta release notes.
…it was racially loaded? There were literal golden masters? I totally understand getting rid of the master/slave terminology for drives (not that it’s terribly relevant anymore) and black listing / white listing (block and allow makes more sense anyway) but this seems more like a scribe thing.
“Golden Master” used to be literal. Or at least figurative. The original was made of tougher material than the copies. Still a legacy term since the software is no longer distributed on optical discs.
I think the correct term now is “GA” for General Availability which also makes more sense.